Hollow-wall concrete-mold.



s. R. MCKAL HOLLOW WALL CONCRETE MOLD.

APPLICATION FILED DEC20 19l5. ,23852 meme@ Aug. 14, 191?.

w M Ng-m 2 0 Z STEWART R. MCKAY, OF CLEVELAND, OE.

HOLLOW-WALL CONCRETE-MOLD.

Specification of Letters Patent.

Patented Aug. 1d, 19t?.

Original application led November 17, 1,914, Serial No. 872,648. Divided and this application :tiled December To @ZZ fr0/wm 2f may concern.'

Be it known that l, Sinwnnr lt. McKay, a. citizen of the United States, residing at Cleveland, in the county of Cuyahoga and State of Chio, have invented a certain new and useful improvement in Hollow-Wall Concrete-Molds, of which the following is a full, clear, and exact description.

This invention relates to concrete' forms and more particularly to a form by which a hollow orventilatedwall may be formed. rlhis application is adivision of my application, Serial No. 872,648, filed November 1T, 1914, entitled Concrete forms.

Generally speaking, the invention may be said to comprise the elements and combinations thereof set forth in the accompanying claims.

Reference should be had to the accompanying drawings forming a part of the specification in which Figure 1 is a perspective view showing a form for concrete walls embodying my invention; Fig. 2 is a perspective view showing in more detail a form embodying my invention; Fig. 3 is a section showing a form or tie rod employed with my invention; Fig. 4 is an elevation with portions in section, of the tie rod shown in Fig. 3.

The invention described in this application is more particularly designed to be used in connection with the concrete forms which are shown and described in my prior application to which reference has above been made. However, I do not intend to limit myself to employing them alone in this connection as it will be apparent that the construction described may be used with other forms for forming the outer portions of the wall while using the forms of my invention to form the hollow interior portion ofthe wall.

In Fig. l I have shown in part a construction of concrete form which is shown and described in my prior application, embodying vertically extending uprights 1, between which there extend plates or panels 2, these plates 2 being held to the uprights 1 in any desired manner as by means of yoke-shaped brackets 3 whichare secured to the uprights 1 and have portions that engage with the ends of the plates 2. The up- Serial No. 137,953.

rightsl are spaced from each other and held in their proper position by means of ranger rods 4, these ranger rods -being secured to. the uprights by any suitable means such as indicated at 5. Y

lt will be understood that `the opposite side of the wall will be made by the use of forms which complement the forms which have just been described and embody vertically extending posts 1a between which 'extend plates 2a. rlhe manner in which the forms just described are. used will be well understood from the description given, particularly if reference be had to the application to which reference has before been made.

Between each pair of posts 1, la, holding brackets are secured, these holding bracket-s comprising a plate G'having an upturned portion 6;L which fits against a post l and is secured thereto by a bolt 7. ,There is an over-lapping1 plate 8 which engages with the plate 6 and as an upturned flange 8a which is adapted to be secured to the post 1a, the same as described with respect to the plate 6, the bolt for securing it being indicated at 9. Upon the over-lapping plates 6 and 8 there are laid adjustable holding plates 10 and 11. These plates are provided with oppositely extending shoulders 10a and 11a. In each of the plates l0 and 11 as well as in the plates 6 and 8 there is formed an elongated slot such as indicated at 12 in Fig. 2, and through the elongated slot there eX- tends a bolt 13 which carries a nut, not shown, by which construction the various plates just described can be held in any adjusted position. The elongated slot and holding bolt construction permits the plates v6 and 8 to be shifted with respect to each other and thereby enables their ready insertion between the uprights 1 and 1a, and further the plates being relatively adjustable, standard sizes of plates may be yused in making walls of different thickness. Furthermore, the adjustability of the plates 10 and 11 permits a standard form of plate to be used, and allows of adjustability to accommodate different adjustments of the inner forms, to be used inmaking hollow walls having different widths of hollow space.

The plates 10 and 11 receive a channelshaped member 13a which extends vertically between the posts 1, 12L and is held between the shoulders 10u and 11- of the plates I1() and 11, thus being centered and retained with respect to the outside wall forms, The channel member 13a is slightly tapered to facilitate withdrawing of the same after the concrete is placed.

The flanges of the member 13a coperate with core panels or plates let, these core plates for the purpose being formed with extending tongues 14a the same as are the panels 3, the face of the panels 14 and the outside faces of the flanges of the channel lying substantially flush. The core plates 14 are spaced from` each other by means of spacer members 15 which hold the plates 11 1n proper coperative position with the channel member 13a. This spacer is slightly tapered to permit its easy withdrawal.v

Other spacing plates similar to plates 6 and 8, as well as the holding plates 10 and 11 may be used to hold and retain the channel member 13a at various portions throughout the length of the channel 13e. Usually it will only be necessary to thus hold the channel member 13au at the top and bottom,

but intermediate holding of the channel in the manner described may be effected if desirable or necessary.

As shown in Fig. 1, the opposite ends of the panels 1l are retained in the manner described in the construction shown in Fig. 2, and as many spacing members 15 may be used to hold the panels 14 with respect to the channels 13IL as are deemed desirable or necessary.

1t will be understood from my prior application that the wall forms described are adapted to be placed in position to form a desired height of wall, after which the concrete is placed in the form, and when the concrete is sufficiently hardened the uprights 1 are extended and the panels 2 moved up to be in position to form a new portion of the wall.

The forms described in this application for forming the hollow wall will be dealt with in exactly the same manner, that is to say, the channel members 13a will be of a length to form the desired height of wall, and the plates 14 will be placed within the channel members in accordance with the length of the channel member 13, and as the wall is molded the plates 1i. channel members 13a and spacer members 15 will be removed and advanced in the building of the wall the same asthe forms which make the outer portion of the wall.

In removing the forms after the concrete has beenI placed, the spacer members 15 are first removed, which releases the plates and permits them to be withdrawn, this being accomplished by a hook or in any other desired manner. Similarly the channel members 13ELA may be withdrawn, but the plates G and S as well as the plates 10 and 11 may be left in the wall, and the last top plate construction may be utilized to hold the lower end of a channel member 13a which is to be used in connection with forming an advance portion of the wall.

The bolts, such as 7, which hold the plate members 6 and 8 to the uprights 1, 1a, may be removed and thus release the members 1, 1a and permit of their removal.

The members 1, 1a of course must be space-d apart and held in their spaced position. This is in part taken care of by the spaced plates 6 and 8 but intermediate of such spaced plates 1 may use a tie rod construction such as is shown in Figs. 3 and i.

The stay bolts or tie rods which I thus prefer toemploy are hollow bolts made in two semi-elliptical tapered sections one of which sections is adapted to telescope within the other. Referring more particularly to Figs. 3 and l, 20 denotes the larger and receiving section and 21 the smaller and inner section. It will be observed that the sections 2O and Q1 are provided with closely spaced wedge-key openings 20L and 21a. For walls of ordinary thickness, both members 20 and 21 will extend from a post of one side of the frame to the opposed post on the other side and through the webs 1b thereof without any necessity for extending the bolt. ln operating upon walls of greater thickness, the members may be extended, thereby increasing the effective length of the stay bolt. It is preferred to support the stay bolt sections upon a solid core, indicated at Q00. This core is shown as of general elliptical cross section, enabling it to conform to the members 20 and 21, and isprovided with a series of openings Q01 therethrough corresponding to the openings Q0:l and 91a. Owing to the number and close proximity of the openings 201, 2Oa and 21L and the fact that these openings are much longer than the width of the key, a series of these openings can be brought into register at each end of the bolt so that the wedge keys, indicated generally at Q2, may be inserted in such openings, bearing at their inner edges 23 against the webs 1by of the opposed posts. For the purpose of securing these keys and the stay bolt in proper relation to the post, I have provided each key with a short fork 2l projecting parallel with a longer fork 25, constituting the entering end of the key. The stay bolt is applied to the opposed posts through suitable openings in the webs 1b thereof. lhen the key is driven into alined openings in the core and the stay bolt sections, the web 1h below the stay bolt opening 26 is received between the forks 2l and 25, the slot formed between said forks heilig in alinement with theweb 1b. By this means the parts are anchored firmly and securely I claim, is:

lio

l. In a form of the character described, the combination of a pair of opposed units each comprising a pair of posts and a mold plate adapted to be inserted therebetween, a pair of tie plates interposed between and removably connected to opposed parts of such units, a pair of relatively adjustable retaining members connected to each of said tie plates and having core engaging projections extending substantially parallel with the mold plates, a tapered retaining device mounted between each pair of projections, a pair of core plates inserted between said retaining devices, and a spreading device adapted to be inserted between'said corel plates.

2. In a form of the character described, the combination of a pair of units each comprising a pair of posts and an interposed plate, a pair of opposed tapered retaining devices insertible between said units and each having a pair of flanges adapted to extend substantially parallel with said plates, the flanges of one device being arranged to be presented toward the flanges of the other device, a pair of core plates adapted to be inserted between said retaining devices with their lateral edges engaged by the flanges thereof, a tapered key adapted to be driven between said core plates, and means for removably supporting the said retaining devices within the space between the units.

3. In a form of the character described, the cbmbination of a pair of units each comprising a pair of posts and an interposed plate, a pair of opposed tapered retaining devices insertible between said units and each having a pair of flanges adapted to extendv substantially parallel with said plates, the flanges'of one device being arranged to be presentedftoward the flanges of the other device, a pair of core plates adapted to be inserted between said retaining devices with their lateral edges engaged by the 'flanges thereof, means for spreading said core plates apart, and means for removably supporting the said retaining devices within the space between the units.

4. In a form of the character described, the combination of a pair of opposed units each comprising a pair of posts and an interposed plate, a pair of" tapered channeled retaining devices adapted to be inserted between said units with their flanges facing each other, a pair of core plates adapted to be inserted in such space with their lateral edges engaging the flanges of the opposed retaining devices, a spreading device adapted tofbe inserted between said core plates,

and means for supporting the channeled retaining devices in the space between the units.

5. In a form of the character described, the combination of a pair of opposed units each comprising a pair of posts and an interposed plate, a pair of ,itapered channeled retaining devices adaptedk to be inserted between said units with their flanges facing each other, a pair of core plates adapted to be inserted in such space with their lateral edges engagin the flanges of the retaining devices, a we ge key adapted to be driven between said core plates, -a tie plate detachably connected to the posts of the units, and means adj ustably connected to said tie plates for supporting the tapered retaining devices in the space between said units.

6. In a form of the character described, the combination of a pair of opposed units each comprisingl a pair of posts and an interposed plate, a pair of tapered channeled retaining devices adapted to be inserted between said units with their flanges facing each other, a pair of core plates adapted to be inserted in such s ace with their lateral edges engaging the flanges of the retaining devices, a spreading device adapted to be inserted between said core plates, and adjustable means adapted to engage the flanges of the retaining devices thereby to support the said devices in the space between said units.

7. In a form of the character described, the combination of a pair of opposed hollow metal posts, a tie rod extending between said posts and comprising a pair of tapered segmental telescopically connected sections each provided with a plurality of apertures, and wedge keys adapted to be driven through the apertures in the portions of said rod that project through said posts.

8. A tie rod for concrete forms comprising a pair of tapered segmental telescopically connected sections each provided with a plurality of apertures.

9. In a form of the character described, the combination of a pair of opposed hollow metal posts, a tie rod extending between said posts, said rod comprising a pair of tapered segmental telescopically connected sections each provided with a plurality'of apertures, and wedge keys adapted to 'be driven through the apertures in the portions of said rod that project through said posts, the aperture in one of said posts having a slotted extension, each wedge key being adapted to be driven through alined openingsin the projecting ends of said tie rod sections and having a forked end, the space between said forks being adapted to receive the outer web of the post.

10. In aform of the character described, the combination of a pair of'opposed hollow metal posts, a tie rod extending between said posts and comprising a pair of tapered segmeenam mental teieseopioaiiy eonneete sections each said tie Tod sections from the side of the piovieci with e pumiity of apertures, and opening opposite said extension and having 10 a Wedge key adapted to be driven through a forked end., the space between said forks the apertures in the piojecting portions of being adapted to :receive 'the outer web of the said rod sections, the aperture in one of said post.

posts having a slotted extension, each Wedge n testimony whereof, hereunto afix my key being adapted to be driven through signature.

aiined openings in the projecting ends of STEVART R. MGKY. 

